diff --git a/tailbone/views/email.py b/tailbone/views/email.py
index d95be94d..b6f7b946 100644
--- a/tailbone/views/email.py
+++ b/tailbone/views/email.py
@@ -280,7 +280,8 @@ class EmailPreview(View):
     def email_template(self):
         recipient = self.request.POST.get('recipient')
         if recipient:
-            keys = filter(lambda k: k.startswith('send_'), self.request.POST.keys())
+            keys = [key for key in self.request.POST.keys()
+                    if key.startswith('send_')]
             key = keys[0][5:] if keys else None
             if key:
                 email = mail.get_email(self.rattail_config, key)